Improvement in pile-drivers



.NrrEn STATES CHARLES D. HALL, OF

Tool! whom it may concern.-

Be it known that we, CHAS. D. HALL, of Hew Haven, in the county of New Haven and State of Connecticut, and EBEN BAD- GER, of Waukegan, Lake county, State of Illinois, have invented a new and valuable Improvement in Pile-Drivers; and we do hereby declare that the following is a full, lear, and exact description of the construcon'and operation of the same, reference being had to the annexed drawing making a partof this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawing is a representation f a vertical transverse section of our invenftion. Figure 2 is a top view of the hammer. Fig. 3 is, a cross-section of the. jaws.

This invention has relation to certain improvements in pile-drivers. The machine to which these improvements are applicable is provided with a pair of pivoted jaws, which 're, suspended on the end of the hammer-rope, and adapted toautomatic operation, so as "to seize the hammer and causeit to be raised nd release it when it has been brought to the proper elevation. The novelty of this invention consists in providing means whereby the beveled pin on the hammer is turned to the- !prop'er position for the grasp of the jaws; also in the application and arrangement of jsprings forclosing the jaws, the application and arrangement of cushions between the aw-block and hammer, and in the arrange- ;iment and mode of operating the tripping dees which operate to open the jaws and reease the hammer. 'In' the accompanying drawing illustrating this'inventiom A represents the base, and B the upright leaders, of a pile-driver. O designates the hammer-rope. I D designates the miner, recessed from the top and furnished 1th a turning-block or handle, D, of a trianlar form, with rounded journals. E repre- ;sen ts the block, which holds the jaws or nippers'F F, pivoted within a longitudinal vertical slot cut therein. F represents a link, by means of which the jaws and block are ttachedto the rope G. G are springs, arranged to close the beveled ends of the jaws F- over the triangular block or pin D when hey are lowered for that purpose. H reprets a beveled notch cutin the inner edge PATENT QFFICE.

NEW HAVEN, CONNECTICUT, AND EBEN BADGER, or WAUKEGAN, ILLINoIs.

IMPROVEMENT IN FILE-DRIVERS.

pecification forming part of Letters Patent No. 138,936, dated December 17, 1872 antedated December 11,

of one of the jaws and designed for the purpose of turning the triangular block to the proper position for receiving the grasp of the jaws whenever it requires such movement, as is often the case. l represents the trippers, which open the jaws in order to release the hammer and let it fall. They consist of bent metallic spring rods, arranged within recesses cut in the leaders B, and project in between them in such a manner that the upper and diverging arms of the jaws 'must come in contactwiththem when being raised past them. J represents cords attached to the upper ends of the trippers and thence brought downward, after being passed through apertures in the leaders, to within reach of an attendant, who may draw back these trippers so as to allow the hammer to bcraised to any desired height. The jaws may be opened when above the trippers by a man at the top,

of the leaders using a bar. When one jaw is released the other releases itself. K represents small rubber blooksinserted in recesses formed on the under side of the block E and intended to break the descent of said block and save the hammer from injury.

What we claim as our invention, and desire tosecure by Letters Patent, is-

1. The jaw or nipper F, constructed with the beveled notch H and adapted to regulate the position of the block D, substantially as specified.

2. The springs G'G, applied to close the jaws F F, substantially as and for the purpose set forth.

3. The spring-trippers I and cords J, as described',-in combination with the jaws F F and hammer D.

4. The applicationv of the cushions K, substantially as and for the purpose set forth.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.

. CHAS. D. HALL.

EBEN BADGER.

Witnesses to (links. D. HALL:

SYLvANUs BUTLER, GEORGE 0. STEVENS.

Witnesses to EBEN BADGER: OLIVER S. LINooLN,

4 FRANCIS E. CLARKE, 

